imponderable

be of imponderable weight

an imponderable problem of metaphysics.

such imponderable human factors as aesthetic sensibility.

there are too many imponderables for an overall prediction.

Many imponderables influence the result of an election.

In his scheme, investment was governed by the animal spirits of entrepreneurs, facing an imponderable future.

And how can we generate this imponderable quality, which is yet so invaluable, most quickly?

Sublimed into imponderable vapour, I mingle and am lost in the endless foods of those vast globular volumes of vaporous mists, which roll upon their flaming orbits through infinite space.

The imponderable bloom, declared by a discredited philosophy to be the actual essence of intercourse, was rightly ignored by the Machine, just as the imponderable bloom of the grape was ignored by the manufacturers of artificial fruit.

He was a short man with a mustache resting like a small white cloud beneath his undistinguished nose. He had reached the stage where his value as a social creature was a black and imponderable negative.